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readMagneticField

Read one sample of magnetic field from sensor

Description

example

[magReadings,timestamp] = readMagneticField(imu) returns one sample of the magnetic field data on x, y, and z axes read from the sensor in units of µT (microtesla) along with the timestamp. timestamp optional.

Examples

Read Magnetic Field

Create an Arduino object and include the I2C library.

a=arduino();

Or, you can explicitly specify it in the Libraries Name-Value pair while creating the Arduino object.

clear a;
a = arduino('COM4', 'Uno', 'Libraries', 'I2C');

Create the sensor object.

imu = mpu9250(a);

Return one sample of magnetic field data.

magReadings = readMagneticField(imu)

magReadings =

   16.2797    9.1711  -19.0969

Input Arguments

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The IMU sensor object.

Output Arguments

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The magnetic field value on x, y, and z axes read from the sensor.

The time at which MATLAB® receives magnetic field data from the sensor, specified as a datetime.

More About

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Code Generation Using MATLAB Function Block

  • Use readMagneticField in a MATLAB Function block with the Simulink® Support Package for Arduino® Hardware to generate code that can be deployed on Arduino Hardware.

  • Timestamp returned is always in seconds.

Introduced in R2019a